Insulator clevis



"UNETLEI s'r Patented Aug. 18, 1931 MILTON W. COOKE. OF PITTSBURGH,PENNSYLVANIA INSULATOR CLEVIS I Application fllediDecember s, 1927. awno. 238,695.

This invention relates toinsulator clevises and more particularly to aclevis'for use with I strain-insulators. 1 v h Such insulator clevisesas have heretofore beenprovided are rather complicated and costly and itis an object of this invention to provide an improved clevis that shallbe simple in construction, inexpensive to manu I facture and practicalin operation.

1 Another object of this invention is to provide an insulator cleviscomprising a unitary member that shall be formed by a single stamping.

v V, A further object of this invention is to provide an insulatorclevis having the above characteristics, that shall be adapted for usein anchoring the dead end of a wire, or allowing it to be bent andextended to some other point.

' Other objects are attained by means of the device hereinafterdescribed and illustrated in the accompanying drawings,cwherein,

Figure 1 is a perspectiveview of an insulator clevis embodying theinvention showing one manner in which it may be applied.

in service, g V

Fig. 21s a top plan vlew of an insulator clevls embodying the lnvention,

; Fig. 3 is a side elevational viewof Figure '2, and g I Flg. 4 is anelevational view of a clamping bolt and nut employed'with the invention.

In the drawings, 11 is a clevis formed from a rectangular member of anysuitable material such as metal strap having a main body portion 12, a Ushaped left end 13 and a flanged right end 14. The U shaped end 13 isformed by slitting the rectangular memher along the longitudinal'centerline of its left end and the portions 15 and 16 are pressed upward,substantially at right angles to their former positions, as shown,forming the legs of the U, which are adapted to receive an insulator.The legs 15 and 16 of the U are provided with openings 17 for receivinga suitable bolt 18 for connecting the clevis to the insulator 19, (seeFig. 1). The openings 17 are drilled in alignment or punched through thelegs 15 and 16 so that they will cooperate to receive the bolt 18.

The right end 14 of the clevis '11 is formed by pressing the sidesadjacent the end of the rectangular member upward and forming flanges 21and 22' substantially as shown. The right end of the clevis whichincludes flanges 21 and 22, terminates in an outwardly extending flangeportion 23 which extends around the entire surface of the right end ofthe clevis. The upturned flanges 21 and 22 form an entrance 24 forreceiving the wire or cable to be anchored.

The main body portion 12 is provided with a struck-up portion 20 havingits outer sides concaved, as shown at 25, for cooperating with thecontour of a wire or cable 26, (see Fig. 1). An oblong opening 27 isprovided at the'rightend of the clevis for receiving a suitableclamping. device 28, the inclined and rather oblong opening 27 maybeformed by punching upward and outward through the main body portion 12.

Any suitable clamping device may be. employed for clamping the cable 26in fixed relation to the clevis 11 and the: clamping device illustratedherein'compri ses a bolt 29 having a head portion 30, a shank portion 31adjacent the head portion, and a threaded portion 32 which is adapted toengage and cooperate with the threaded nut 33. A square. washer 34fisprovidedforthe-bolt and is substantially of the same dimensions as theinner di-' mensions between the flanges 21 and 22. "The shank portion 31ofthe bolt issubstantially the same dimensions astheopening 27,,which isadapted to. receive the shank portion and prevent" the bolt fromturning. p I

' The practice of this invention" is clearly illustrated by Figure 1,which shows the clevis 11 connected to an insulator 19 and a cable orwire 26, disposed in the entrance 90 24, formed by the flanges 21 and22, and an chored aroundthe struck-up portion 20, the clamping device 28being positioned in the opening 27 "'andthe cooperating washer 34 andnut 33 inclamping position.

V The clevis 11 may be employed to anchor the dead end-of a cable 26, asillustrated by the solid lines in Fig. 1, orallow it'to bend, and extendto some other point, asshown by the dotted lines in Fig. 1. The inneredges 85 of the right end of the clevis are rounded so as to prevent anysharp breaks in the cale 26 and to permit the cable to be bent in anydesired direction about the right end of the clevis, and to be subjectto tensional strain without injury to the cable.

An important advantage of this invention is that the clevis 11 is formedfrom a rectangular member by a single stamping and obviously theinvention is especially simple, inexpensive to manufacture and will beefli- 'cient and very desirable where such a device is desired.

lVhile I have illustrated and described but one embodiment of thisinvention, it will be apparent to those skilled in the art that certainchanges, modifications, substitutions, additions and omissions may bemade in the arrangement 01 the unitary clevis without departing from thespirit and scope of the appended claims.

vl' hat I claim and desire to secure Letters Patent on, is:

1. An insulator clevis comprising a unitary member having one of itsends U shaped for receiving an insulator, its other end flanged to forma cable entrance, the said flanged end terminating in an outwardlyextending flange and a struck-up portion for engaging the contour of thecable substantially as described.

2. An insulator clevis having an insulator supporting end and a cablereceiving end provided with oppositely disposed upwardly extendingflanges formed on the body of the clevis and a clamp located betweensaid flanges for clamping an associated cable to said body portion, saidflanges extending upward a substantial distance so that said cable willbe wholly within the height of said flanges and said clamp can be lockedtherebetween.

3. An insulator clevis having an insulator supporting end and a cablereceiving end provided with oppositely disposed upwardly extendingflanges formed on the body of the clevis, a lug around which anassociated cable may be looped and a clamp located between said flangesfor clamping a. cable looped around said lug to said body, said flangesextending upwardly a substantial distance so that they extend above saidcable and cooperate with said clamp.

4. An insulator clevis having an insulator supporting end and a cablereceiving end having parallel flanges formed on the opposite edgesthereof, a clamping nut and bolt associated with said clevis betweensaid flanges and a rectangular washer extending substantially across thespace between said flanges for clamping an associated cable to saidbody, said flanges extending upward a substantial distance so that thesides of the cable will be entirely therein and so that the washer willcooperate with the flanges.

5. An insulator clevis comprising a unitary member having one of itsends U-shaped for receiving an insulator, its other end flanged andforming a cable entrance, said flanges extending upward a substantialdistance, said flanged end of the clevis having a slot between theflanged portions thereof, a cable securing means positioned in saidslot, the clamping portion of said cable securing means having arectangular form cooperating with the flanges of said flanged end, sothat the clamping portion can be pressed downward upon a cable disposedbetween the upwardly ex tending flanges.

6. An insulator clevis comprising a unitary member having one of itsends U-shaped and provided with extending legs of flat outline, theother end of said clevis being provided with cable securing means, saidmeans including a struck-up portion inclining downwardly toward thelatter end, the highest portion of said strucleup portion having anoutline conforming with a cable to be looped thereover, a bolt, a squarenut and washer cooperating with this end of said clevis between thestruclnup portions for clamping the ends of a cable looped over thestruck-up portion.

7. An insulator clevis including a unitary member having one of its endsU-shaped for receiving an insulator, its other end having a restrictedcross section and having upwardly extending langes positioned adjacentthis restricted portion thereof, a struck-up portion for receiving aloop of wire, a bolt square washer and nut clamping means positioned insaid clevis between the flanged portions thereof for clamping theextending ends of the looped wire between the flanged portions, saidflangd portions having a substantial height so that the cable will beentirely therein and that the square washer and nut of the securingmeans will cooperate therewith to clamp the cable thereto.

In testimony whereof, I have hereunto subscribed my name this 16th dayof November, 1927.

MILTON W. COOKE.

